package com.ak.reggie.controller;

import com.ak.reggie.common.R;
import com.ak.reggie.dto.DishDto;
import com.ak.reggie.entity.Category;
import com.ak.reggie.entity.Dish;
import com.ak.reggie.entity.DishFlavor;
import com.ak.reggie.service.CategoryService;
import com.ak.reggie.service.DishFlavorService;
import com.ak.reggie.service.DishService;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

/**
 * 菜品管理
 */
@Slf4j
@RestController
@RequestMapping("/dish")
public class DishController {

    @Autowired
    private CategoryService categoryService;

    @Autowired
    private DishService dishService;

    @Autowired
    private DishFlavorService dishFlavorService;

    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * 新增菜品
     * @param dishDto
     * @return
     * INSERT INTO dish ( id, name, category_id, price, code, image, description, status, create_time, update_time, create_user, update_user ) VALUES ( ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ? )
     * INSERT INTO dish_flavor ( id, dish_id, name, value, create_time, update_time, create_user, update_user ) VALUES ( ?, ?, ?, ?, ?, ?, ?, ? )
     */
    @PostMapping
    public R<String> save(@RequestBody DishDto dishDto) {
        log.info(dishDto.toString());

        dishService.saveWithFlavor(dishDto);

        //清理所有彩品的缓存数据
//        Set keys = redisTemplate.keys("dish_*");
//        redisTemplate.delete(keys);

        //清理某个分类下面的菜品缓存数据
        String key = "dish_" + dishDto.getCategoryId() + "_1";
        redisTemplate.delete(key);

        return R.success("新增菜品成功");
    }

    /**
     * 菜品信息分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name) {
        //1、构造分页构造器对象
        Page<Dish> pageInfo = new Page<>(page,pageSize); //被拷贝对象
        Page<DishDto> dishDtoPage = new Page<>(); //最终对象

        //2、条件构造器
        LambdaQueryWrapper<Dish> wrapper = new LambdaQueryWrapper<>();
        //添加过滤条件
        wrapper.like(name != null, Dish::getName, name);
        //添加排序条件
        wrapper.orderByDesc(Dish::getUpdateTime);
        //执行分页查询
        dishService.page(pageInfo,wrapper);

        //对象拷贝
        BeanUtils.copyProperties(pageInfo, dishDtoPage, "records");

        List<Dish> records = pageInfo.getRecords();
        List<DishDto> list = records.stream().map((item) -> {
            DishDto dishDto = new DishDto();
            BeanUtils.copyProperties(item, dishDto);

            Long categoryId = item.getCategoryId(); //分类id
            //根据id查询分类对象
            Category category = categoryService.getById(categoryId);
            if (category != null) {
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }
            return dishDto;
        }).collect(Collectors.toList());

        dishDtoPage.setRecords(list);

        return R.success(dishDtoPage);
    }

    /**
     * 根据id查询菜品信息和对应的口味信息
     * @param id
     * @return
     * 分类信息：SELECT id,type,name,sort,create_time,update_time,create_user,update_user FROM category WHERE (type = ?) ORDER BY sort ASC,update_time DESC
     * 根据id当前菜品：SELECT id,name,category_id,price,code,image,description,status,sort,create_time,update_time,create_user,update_user FROM dish WHERE id=?
     * 当前菜品口味：SELECT id,dish_id,name,value,create_time,update_time,create_user,update_user,is_deleted FROM dish_flavor WHERE (dish_id = ?)
     */
    @GetMapping("/{id}")
    public R<DishDto> get(@PathVariable Long id) {
        DishDto dishDto = dishService.getByIdWithFlavor(id);
        return R.success(dishDto);
    }

    /**
     * 修改菜品
     * @param dishDto
     * @return
     */
    @PutMapping
    public R<String> update(@RequestBody DishDto dishDto) {
        log.info(dishDto.toString());

        dishService.updateWithFlavor(dishDto);

        //清理所有彩品的缓存数据
//        Set keys = redisTemplate.keys("dish_*");
//        redisTemplate.delete(keys);

        //清理某个分类下面的菜品缓存数据
        String key = "dish_" + dishDto.getCategoryId() + "_1";
        redisTemplate.delete(key);

        return R.success("新增菜品成功");
    }

    /**
     * 根据条件查询对应的菜品数据
     * @param dish
     * @return
     * SELECT id,name,category_id,price,code,image,description,status,sort,create_time,update_time,create_user,update_user FROM dish WHERE (category_id = ? AND status = ?) ORDER BY sort ASC,update_time DESC
     */
//    @GetMapping("/list")
//    public R<List<Dish>> list(Dish dish) {
//        //查询条件对象
//        LambdaQueryWrapper<Dish> wrapper = new LambdaQueryWrapper<>();
//        wrapper.eq(dish.getCategoryId() != null, Dish::getCategoryId, dish.getCategoryId());
//        //查询状态为1的
//        wrapper.eq(Dish::getStatus, 1);
//        //添加排序条件
//        wrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
//        List<Dish> list = dishService.list(wrapper);
//
//        return R.success(list);
//    }

    @GetMapping("/list")
    public R<List<DishDto>> list(Dish dish) {

        List<DishDto> dishDtoList = null;
        //动态的造key
        String key = "dish_" + dish.getCategoryId() + "_" + dish.getStatus(); //dish_1397844263642378242_1
        //先从redis中获取缓存数据
        dishDtoList = (List<DishDto>) redisTemplate.opsForValue().get(key);
        //如果存在，直接返回，无需查询数据库
        if (dishDtoList != null) {
            return R.success(dishDtoList);
        }

        //查询条件对象
        LambdaQueryWrapper<Dish> wrapper = new LambdaQueryWrapper<>();
        wrapper.eq(dish.getCategoryId() != null, Dish::getCategoryId, dish.getCategoryId());
        //查询状态为1的
        wrapper.eq(Dish::getStatus, 1);
        //添加排序条件
        wrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
        List<Dish> list = dishService.list(wrapper);

        dishDtoList = list.stream().map((item) -> {
            DishDto dishDto = new DishDto();
            BeanUtils.copyProperties(item, dishDto);

            Long categoryId = item.getCategoryId(); //分类id
            //根据id查询分类对象
            Category category = categoryService.getById(categoryId);
            if (category != null) {
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }
            //当前菜品的id
            Long dishId = item.getId();
            LambdaQueryWrapper<DishFlavor> wrapper1 = new LambdaQueryWrapper<>();
            wrapper1.eq(DishFlavor::getDishId, dishId);
            //select * from dish_flavor where dish_id = ?
            List<DishFlavor> dishFlavorList = dishFlavorService.list(wrapper1);
            dishDto.setFlavors(dishFlavorList);
            return dishDto;
        }).collect(Collectors.toList());

        //如果不存在，需要查询数据库，将查询到的菜品数据缓存到redis
        redisTemplate.opsForValue().set(key, dishDtoList, 60, TimeUnit.MINUTES);
        return R.success(dishDtoList);
    }

}
